Communications: electrical – Audible indication – Percussion-type sound producer
Patent
1976-03-18
1977-12-27
Miller, Charles D.
Communications: electrical
Audible indication
Percussion-type sound producer
340347NT, H03K 1320
Patent
active
040657663
ABSTRACT:
A charge transfer analog-to-digital converter is provided wherein a plurality of charge packets is transferred into and out of a charge storage location which includes both linear and nonlinear capacitive components. At the initiation of an analog-to-digital measurement cycle the level of charge in the nonlinear portion of the charge storage location is established at an initial value by comparison with a reference voltage. During the measurement cycle the level of charge in the linear and nonlinear portions of the capacitive charge storage location vary from the initial values thereof as charge is transferred into and out of the charge storage location according to the particular method of analog-to-digital conversion. At the end of the measurement cycle, the level of charge in the nonlinear portion is again established at the initial value thereof so that the net change in charge stored in the nonlinear portion of the charge storage location is zero from the beginning to the end of the measurement cycle.
REFERENCES:
patent: 3626408 (1971-12-01), Carbrey
patent: 3651518 (1972-03-01), Carbrey
patent: 3653030 (1972-03-01), Carbrey
patent: 3733600 (1973-05-01), Hellwarth
patent: 3828347 (1974-08-01), Sacks
patent: 3836906 (1974-09-01), Ando
patent: 3903543 (1975-09-01), Smith
patent: 3906488 (1975-09-01), Suarez
patent: 3930255 (1975-12-01), Means
Butler Walter J.
Eichelberger Charles W.
Cohen Joseph T.
General Electric Company
Miller Charles D.
Salai Stephen B.
Squillaro Jerome C.
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